CONNECTING ELEMENT FOR CONNECTION OF BLADE TO HUB OF INDUSTRIAL AXIAL FAN AND BLADE DEVICE CONTAINING SAID CONNECTING ELEMENT Russian patent published in 2019 - IPC F04D19/00 

FIELD: machine building.

SUBSTANCE: present invention relates to connecting element for connection of blade or airfoil to industrial axial fan hub, and also relates to a vane device comprising said connecting element, and to an industrial axial fan comprising such a vane device. According to this invention, connecting element (1) for connection of blade (10) to hub (20) of industrial axial fan is made in form of a single L-shaped element comprising first part (1a), having a substantially rectilinear configuration, and second part (1b), having a substantially rectilinear configuration, wherein first part (1a) and second part (1b) are connected by binding part (1c), having a radius of curvature, and lie in substantially perpendicular planes.

EFFECT: connecting element according to this invention provides a number of advantages relative to the prior art, one of which is that this element has a very simple shape and is very easy to manufacture, which makes it preferable from an economic point of view.

9 cl, 16 dwg